export type TelemetryMetrics = {
    period_start: string;
    period_end: string;
    total_tool_calls: number;
    successful_tool_calls: number;
    failed_tool_calls: number;
    total_duration_ms: number;
    session_starts: number;
    session_ends: number;
    session_duration_ms_total: number;
    searches: number;
    related_lookups: number;
    caller_lookups: number;
    trace_lookups: number;
    impact_analyses: number;
    rule_lookups: number;
    reloads: number;
    total_results_returned: number;
    estimated_tokens_saved: number;
    estimated_tokens_total: number;
    client_version: string;
    instance_id: string;
    tool_metrics: Record<string, {
        calls: number;
        failures: number;
        total_duration_ms: number;
        total_results_returned: number;
        estimated_tokens_saved: number;
    }>;
};
export type TelemetryEvent = {
    tool: string;
    phase: "success" | "error";
    result_count?: number;
    estimated_tokens_saved?: number;
    duration_ms?: number;
};
export declare class TelemetryCollector {
    private metrics;
    private readonly metricsPath;
    private readonly clientVersion;
    private readonly instanceId;
    private dirty;
    constructor(contextDir: string, clientVersion?: string);
    private bucket;
    recordEvent(event: TelemetryEvent): void;
    record(toolName: string, resultCount: number, tokensSaved: number): void;
    recordSessionStart(): void;
    recordSessionEnd(durationMs: number): void;
    getMetrics(): TelemetryMetrics;
    flush(): void;
    reset(): void;
}
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